5 things you didn’t know about your brain:

• You make up your mind about someone in as little as 100 milliseconds.

• Humor is the brain rewarding us for finding errors and inconsistencies in our thinking.

• You can tell if someone will get dementia by looking at their face and the size of their head.

• Amazing sex can cause amnesia.

• There are a number of other rules the brain works by.

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